Hi davidsonschemists,
Thank you for your purchase.

Yes you can add it but you have to change some core files in plugin. You can add that format in file wp-content/plugins/wpdatatables/templates/admin/table-settings/column_settings_panel.inc.php around line 453 like this

<option value="m/Y">07/2005 (m/Y)</option>

For layout of the charts we are using engines(highcharts,chartjs and google chart engine) which is default behavioral. If you need to customize chart for your needs you can check  in our documentation about wpDataCharts callbacks . 

• Please note that using hooks or wpdatatable or wpdatachart callbacks requires certain level of programing skills and included support refers only to advices.

• Every chart exposes several options that customize its look and feel. Charts usually support custom options appropriate to that visualization. wpdatachart callbacks  allows adding options that are available in Google Charts API, Highcharts API and Chart.js API. 

• All necessary rescuers are available in charts engines API(depends which one you use) .Every engine have different approach of charts settings. In wpdatachart callbacks you have to adopt those settings to wpdatachart object(you can take a look a examples for each engine in our documentation and also in Support help center). Huge number of examples for any area of programming you can find on stackoverflow.com(typing your problem in google and of the end add site:stackoverflow.com and google will search only on that website) and also a lot of resource of examples of chart, chart settings and customisations you can find on jsffidle. net(typing in google for example line chart highcharts jsffidle)

You can do that but you have to make two tables. In first one you will set sorting that shows newest dates and second table where you will set sorting that shows latest dates and set Display length to All and then make chart from that table in which you will use option Follow table filtering.Then on the page you have to insert both tables and that chart.Second table form which you made that chart you can hide with css and you will have results that you need. 

Best regards.